2019 YAMAHA YZF-R1 spark plugs

Table of contentsSafety information........................... 1-1
Description ....................................... 2-1
Left view ......................................... 2-1
Right view ....................................... 2-2
Controls and instruments................ 2-3
Special features ............................... 3-1
YRC (Yamaha Ride Control) .......... 3-1
Glossary ......................................... 3-4
YRC functions visual guide............. 3-5
Instrument and co ntrol functions... 4-1
Immobilizer system ..... .................... 4-1
Main switch/steering lock................ 4-2
Handlebar switches ........................ 4-3
Indicator lights and warning lights ............................................ 4-5
Display ............................................ 4-8
MENU screen ............................... 4-13
Clutch lever................................... 4-26
Shift pedal..... ............................ .... 4-27
Brake lever ................................... 4-27
Brake pedal .................................. 4-28
Brake system ..... ....................... .... 4-28
Fuel tank cap ................................ 4-30
Fuel............................................... 4-31
Fuel tank overflow hose................ 4-32
Catalytic converter ........................ 4-33
Seats ............................................ 4-34
Document storage ........................ 4-35 Rear view mirrors ......................... 4-36
Adjusting the front fork ................. 4-36
Adjusting the shock absorber
assembly................................... 4-38
EXUP system ............................... 4-40
Auxiliary DC connector................. 4-41
Sidestand ..................................... 4-41
Ignition circuit cut- off system ........ 4-42
For your safety – pre-operation
checks .............................................. 5-1
Operation and important riding
points ................................................ 6-1
Starting the engine ......................... 6-1
Shifting ........................................... 6-2
Tips for reducing fuel consumption ............................... 6-3
Engine break-in .............................. 6-3
Parking ........................................... 6-4
Periodic maintenance and
adjustment ....................................... 7-1
Tool kit............................................ 7-2
Periodic maintenance charts .......... 7-3
Periodic maintenance chart for the emission control system ............. 7-3
General maintenance and
lubrication chart .......................... 7-5
Removing and installing cowlings and panels ............... ................... 7-9 Checking the spark plugs ............ 7-11
Canister ....................................... 7-12
Engine oil and oil filt
er cartridge... 7-12
Why Yamalube ............................ 7-16
Coolant ........................................ 7-16
Air filter element ........................... 7-17
Checking the engine idling speed............ ............................ 7-18
Checking the throttle grip free play ........................................... 7-18
Valve clearance ........................... 7-18
Tires ............................................. 7-19
Cast magnesium wheels.............. 7-21
Adjusting the clutch lever free
play ........................................... 7-22
Checking the brake lever free play ........................................... 7-23
Brake light switches ..................... 7-23
Checking the front and rear brake pads................................ 7-24
Checking the brake fluid level ...... 7-24
Changing the brake fluid .............. 7-25
Drive chain slack.......................... 7-26
Cleaning and lubricating the drive chain ................................ 7-27
Checking and lubricating the cables ....................................... 7-28
Checking and lubricating the
throttle grip and cable ............... 7-28
Checking and lubricating the brake and shift pedals .............. 7-28BX4-9-E2.book 1 ページ ２０１８年９月６日　木曜日　午後４時３９分

Periodic maintenance and adjustment
7-3
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678
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EAU71033
Periodic maintenance chartsTIP
Items marked with an asteri sk should be performed by your Yamaha dealer because these items require special tools,
data, and technical skills.

From 50000 km (30000 mi), repeat the maintenance intervals starting from 10000 km (6000 mi).

The annual checks must be performed every year, except if a distance-based maintenance is performed in-stead.
EAU71051
Periodic maintenance chart fo r the emission control systemNO. ITEM CHECK OR MAINTENANCE JOB ODOMETER READING
ANNUAL
CHECK
1000 km
(600 mi) 10000 km
(6000 mi) 20000 km
(12000 mi) 30000 km
(18000 mi) 40000 km
(24000 mi)
1 *Fuel line Check fuel hoses for cracks or
damage.
Replace if necessary. 
2 *Spark plugs Check condition.
Adjust gap and clean.

Replace. 
3 *Valve clearance Check and adjust. Every 40000 km (24000 mi)
4 *Fuel injection Check engine idle speed.

Check and adjust synchronization. 
5 *Exhaust system Check for leakage.
Tighten if necessary.
Replace gaskets if necessary. 
6 *Evaporative
emission control
system Check control system for damage.
Replace if necessary.

BX4-9-E2.book 3 ページ ２０１８年９月６日　木曜日　午後４時３９分

Periodic maintenance and adjustment7-11
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678
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To install the panel
Place the panel in the original position,
and then install the screws.
EAU67110
Checking the spark plugsThe spark plugs are important engine
components, which should be checked
periodically, preferably by a Yamaha
dealer. Since heat and deposits will
cause any spark pl
ug to slowly erode,
they should be removed and checked
in accordance with the periodic mainte-
nance and lubrication chart. In addition,
the condition of the spark plugs can re-
veal the condition of the engine.
The porcelain insulator around the cen-
ter electrode of each spark plug should
be a medium-to-light tan (the ideal color
when the vehicle is ridden normally),
and all spark plugs installed in the en-
gine should have the same color. If any
spark plug shows a distinctly different
color, the engine could be operating im-
properly. Do not attempt to diagnose
such problems yourself. Instead, have
a Yamaha dealer check the vehicle.
If a spark plug shows signs of electrode
erosion and excessive carbon or other
deposits, it should be replaced. Before installing a spark plug, the spark
plug gap should be measured with a
wire thickness gauge and, if necessary,
adjusted to specification.
Clean the surface of the spark plug
gasket and its mating surface, and then
wipe off any grime from the spark plug
threads.
1. Screw
2. Panel B
2
1
Specified spark plug: NGK/LMAR9E-J
1. Spark plug gapSpark plug gap:0.6–0.7 mm (0.024–0.028 in)
Tightening torque: Spark plug (new):18 N·m (1.8 kgf·m, 13 lb·ft)
Spark plug (after checking):
13 N·m (1.3 kgf·m, 9.6 lb·ft)
1
1
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Periodic maintenance and adjustment
7-38
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67
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EAU42505
Troubleshooting chartsStarting problems or poor engine performance
Check the fuel level in
the fuel tank.1. Fuel
There is enough fuel.
There is no fuel.
Check the battery.
Supply fuel.
The engine does not start.
Check the battery.
Remove the spark plugs
and check the electrodes.3. Ignition
Wipe off with a dry cloth and correct the
spark plug gaps, or replace the spark plugs.
Have a Yamaha dealer check the vehicle.
Operate the electric starter.4. Compression
There is compression.
There is no compression.
The engine does not start.
Have a Yamaha dealer check the vehicle.Have a Yamaha dealer check the vehicle.
The engine does not start.
Check the compression.
Operate the electric starter.2. Battery
The engine turns over
quickly.
The engine turns over
slowly.
The engine does not start.
Check the ignition.
The battery is good.Check the battery lead connections,
and have a Yamaha dealer charge
the battery if necessary.
DryWet
Operate the electric starter.
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11-1
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IndexAABS warning light.................................... 4-6
Air filter element .................................... 7-17
Auxiliary DC connector ......................... 4-41
Auxiliary system warning light ................. 4-8BBattery................................................... 7-32
Brake and clutch levers, checking and lubricating ........................................... 7-29
Brake and shift pedals, checking and
lubricating ........................................... 7-28
Brake fluid, changing ............................ 7-25
Brake fluid level, checking .................... 7-24
Brake lever ............................................ 4-27
Brake lever free play, checking ............. 7-23
Brake light switches .............................. 7-23
Brake pedal ........................................... 4-28
Brake system ........................................ 4-28CCables, checking and lubricating .......... 7-28
Canister................................................. 7-12
Care ........................................................ 8-1
Catalytic converter ................................ 4-33
Clutch lever ........................................... 4-26
Clutch lever free play, adjusting ............ 7-22
Coolant.................................................. 7-16
Cowlings and panels, removing and installing................................................ 7-9DData recording, vehicle ......................... 10-2
Diagnostic connector ............................ 10-2
Dimmer switch ........................................ 4-4
Display, main screen............................... 4-8
Display, menu screen ........................... 4-13 Document storage ................................ 4-35
Drive chain, cleaning and lubricating .... 7-27
Drive chain slack .................................. 7-26
EEngine break-in ...................................... 6-3
Engine idling speed, checking .............. 7-18
Engine oil and oil fi
lter cartridge ........... 7-12
Engine serial number............................ 10-1
Engine trouble warning light ................... 4-6
EXUP system ....................................... 4-40FFront and rear brake pads, checking .... 7-24
Front fork, adjusting .............................. 4-36
Front fork, checking .............................. 7-30
Fuel....................................................... 4-31
Fuel consumption, tips for reducing........ 6-3
Fuel level warning light ........................... 4-6
Fuel tank cap ........................................ 4-30
Fuel tank overflow hose........................ 4-32
Fuses, replacing ................................... 7-33GGlossary ................................................. 3-4HHandlebar switches ................................ 4-3
Hazard switch ......................................... 4-4
High beam indicator light ........................ 4-6
Horn switch ............................................. 4-4IIdentification numbers .......................... 10-1
Ignition circuit cut-off system ................ 4-42
Immobilizer system ................................. 4-1
Immobilizer system indicator light........... 4-7
Indicator lights and warning lights .......... 4-5
MMain switch/steering lock ........................ 4-2
Maintenance and lubrication, periodic..... 7-5
Maintenance, emission control system ... 7-3
Matte color, caution ................................. 8-1
Model label ............................................ 10-2NNeutral indicator light .............................. 4-6OOil pressure and coolant temperature
warning light.......................................... 4-7PParking .................................................... 6-4
Part locations .......................................... 2-1
Pass/LAP switch ..................................... 4-4RRear view mirrors .................................. 4-36SSafety information ................................... 1-1
Seats ..................................................... 4-34
Shift indicator light ................................... 4-6
Shifting .................................................... 6-2
Shift pedal ............................................. 4-27
Shock absorber assembly, adjusting .... 4-38
Sidestand .............................................. 4-41
Sidestand, checking an d lubricating...... 7-30
Spark plugs, checking ........................... 7-11
Special features ...................................... 3-1
Specifications .......................................... 9-1
Stability control indicator light.................. 4-7
Starting the engine .................................. 6-1
Steering, checking................................. 7-31
Stop/Run/Start switch.............................. 4-4
Storage.................................................... 8-4
BX4-9-E2.book 1 ページ ２０１８年９月６日　木曜日　午後４時３９分